Mine is built as AR15 16" 1x10 twist Houge free float hand guards and a full length stock. I have been having very good luck with with Hornady180grsoft points and 110gr V-max . I built it to hunt deer with and do preditor controll. It has a three port muzzle break and is very pleasent to fire.........I think this round would be a great rifle to start young hunters or some one with a small build.